Now do not get me wrong, I completely agree with you on the ending being absolute garbage. The pairings make no sense and both chapters were overall rushed. Kishi needs to make up for this somehow. An alternate ending would do the trick! I think it could be pulled off too since a new author is taking over the Naruto franchise. At least from the sources that I have read anyway.
I tell you what he could do is simply provide an alternate ending for the manga, here's one:
Naruto ends up marrying and having children with Sakura instead of Hinata. Sasuke ends up marrying and having children with Karin instead of Sakura.
Ino ends up marrying and having children with Choji instead of Sai, Shikamaru and Temari are married and have a kid as already shown. Mei Terumi (Fifth Mizukage) gets married rather than remaining single.
Kids of the alternate ending pairings being shown. Sasuke and Karin's child or children both being shown with the Rinnegan. Naruto and Sakura's children having blond hair and green eyes and whiskers like Naruto at least one out of the two having a big forehead like Sakura.
More panels of Neji's funeral along with more references to Jiraiya, Minato, Kushina and Obito rather than no references at all like what we got. Showing the ceremonies of Kakashi and Naruto becoming the Sixth and Seventh Hokages.
Killer B being shown as the Raikage instead of Darui.
Orochimaru and Kabuto as well as a few other characters making a final appearance in the last two chapters instead of no appearance at all like what we got. (With the exception of IT being dispelled in 699 of course).
Oh and btw, Kishi is no longer participating in the Naruto franchise after The Last Naruto Movie! A new author will be taking over the Naruto franchise in spring of 2015 so an alternate ending could actually happen! Hopefully it will!